Retrograde eclogite imprinted with blueschist facies minerals including phengite (golden flakey mineral), actinolite (black needles), and glaucophane (blue).
Franciscan Complex, California
#eclogite #blueschist #metamorphism #geology #geoscience #glaucophane #mica #amphibole
In things that make me happy, a bit of the collection...Lawsonite blueschist, eclogitic blueschist, glaucophanite, various eclogites, orthopyroxenite, clinopyroxenite, garnet websterite
#eclogite #pyroxenite #blueschist #clinopyroxenite #websterite #garnet #metamorphic #geology #geoscience
Close up of Blueschist at Turtle Rock #ringmountain #ringmountainprserve #turtlerock #franciscancomplex #geology #blueschist #tiburon #marincountyopenspace #naturephotography
Thin Section Thursday:
An epidote-rich vein in blueschist. Coarse epidote group minerals are intergrown with glaucophane (blue-violet in plane light) and Na-Ca amphibole (blue-green) + garnet. Field of view ~2 mm. Contributed by Donna Whitney. #blueschist #epidote #glaucophane
Layered blueschist sample. FOV 3 mm, PPL
1/ EXTRA - from the paper accepted yesterday - we have a new blueschist locality!
This is a really cool blueschist - that deserves an EBSD study in my opinion, because it is one of the few cases you can tie structures to the blueschist facies!
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#geology #blueschist #metamorphism
Metamorphosed mafic volcanic rock known as blueschist or glaucophane schist. Contains porphyroblasts of lawsonite (diamond-shaped), indicative of High P/LowT burial, also red, equant garnets.
The view west down the Täschtal towards the Matter valley, from the Saas-Zermatt ophiolite exposure at its upper, eastern end. There are pillow lavas too, and lovely wildflowers :)
#MineralMonday High pressure/low temperature #blueschist (glaucophane) facies metamorphism with lawsonite and garnet porphyroblasts. Zermatt-Saas zone. Täschtal (photo), Valais, Switzerland. #OUGS Alps 2000 with Bill Fitches
Blueschist, a rock consisting of blue Na-amphibole, greenish epidote, and white mica, as seen under the petrographic microscope.
I have a fetish for blueschists found in places where they were not reported 😂. Before leaving Japan, I managed to find a new blueschist locality. Just waiting to have the time to publish this cutie pie ❤️
FOV 3 mm
Sanbagawa belt of Japan
#geology #ThinSectionThursday #blueschist
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Microphotograph taken at the petrographic microscope showing a blueschist, a type of metamorphic rock that forms at high-pressure in subduction zones.
#blueschist for #bluesky for my first 600 followers 🥳🎉
The blues are zoned sodic amphiboles (crossite core, glaucophane rim), the green is mostly epidote
Plane polarized light
Field of view: 2.5 mm
From a paper I wrote on the Sanbagawa - which I hope will come out soon...
#geology #thinsection
Collage of several microphotos across 1 cm width showing your friendly mylonitic marble of the neighborhood. The porphyroblasts are huge albites that contain glaucophane inclusions. Yes, this is the exhumed blueschist of Elba :)
#geology #mylonite #blueschist
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Folds in blueschist-facies rocks, Sanbagawa metamorphic belt
(in a submitter paper that's in an advanced stage of review)
#geology #blueschist #sanbagawa #folding
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